Re: Analemma

In article <4c3fe0dc-31c3-4dbe-9cac-eae4f05e7e5f@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
<perseus@xxxxxxxxxx> wrote:
Is it true that the uppermost loop of the Sun's Analemma is ALWAYS
bigger than the bottom loop, and if so can anyone tell me why?

Only from the northern hemisphere is the uppermost loop bigger. As
seen from the souther hemisphere, the lowermost loop is bigger.

The uppermost loop is where the Sun resides during summer. And
the biggest loop is where the Sun resides when the Earth is most
distant from the Sun. If the Earth's orbit had been a perfect
circle, the two loops would be of equal size, and symmetrical.
And if the Earth had been most distant from the Sun near an
equinox rather than near a solstice, the two loops would be of
equal size although somewhat asymmetrical.

Checkout http://www.analemma.com for more info




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